Twin flow-through connections listed below are to ensure that
both low frequency volumetric flow fluctuation frequencies , and high
frequency "acoustic" pressure pulsation, are fully intercepted and
addressed by the pulsation damper; at the same time as providing full
flushibility.
Where the benefits of superior flow fluctuation
smoothing, and pressure pulsation interception for free, plus in line
flow through flushibility are not required, on single conection may be
specified.
The available size of a
single connection, for mounting
on an additional "T" piece in the system, can usually be up to
twice the
size of "flo-thru" porting listed for a given volume of damper. Single
flanges must have an OD less than the dimension that falls inside the
body bolting.

MINI & SMALL volumes, of high pressure pulsation dampers, with PTFE membranes . PTFE aka Dupont "TEFLON ®" is a stiff material,
the force necessary to cause it to deflect , particularly at a even a
moderate frequenct prevents achieving levels of residual pulsation
lower than 0,5 bar , which is specially difficult with small diameter
membranes. The solution is generally to use a larger diameter
diaphragm, which causes the volume of the model chosen to be grater
than expected.

It is advisable to consult email fluid.flow,tech.uk@LLDIinc.net in these cases
FlexFlon™
modified PTFE is a Liquid Dynamics International membrane
material that does not suffer from the porosity of sintered PTFE , and
is therefore provided by PulseGuard without an elastomeric bonded
backing . Diaphragms designated below "DW" are FlexFlon mtfe.

Type /
Ordering

Volume

Design Pressure
@93 C

Connections (to
pump / to sys.)

Length without
pipes

Diameter (and bolting)

Weight

Spares Kit Part
Number

Flo-??

(Liters)

(Bar)

& State Angle

(mm)

(mm)

(kg)

SK/--

"Dia-Seal"

0.016

140

Single 0.5" NPT

70

108 ( 4 Bolt)

2

DW45 FlexFlon

Flo-SS

0.008

20

1/8"FNPTx 1/8"FNPT

101

120 (4 Bolt )

5

DF63 ut

70

101

135 ( 4 Bolt)

FD63

140

1/8"FNPTx 1/8"FNPT

101

135 (8 Bolt)

8

DF63 + bolted button

280

1/4" NPTF
1/4" NPTF

139

150 (8 Bolt)

DF63 + bolted button

400

1/4" NPTF
1/4" NPTF

150

150 (12 bolt)

DF63 + bolted button

Flo-SS

0.025

144

1/4" FNPT
x 1/4" FNPT

135

158 (4 Bolt)

11

DW84

288

1/4" FNPT
x 1/4" FNPT

135

158 (8 Bolt)

18

DF84 + bolted button

432

1/4" FNPT
x 1/4" FNPT

135

158 (12 Bolt)

24

DF84 + bolted button

Flo-SS

0.05

144

3/8" FNPT x 3/8" FNPT

135

160 (4 Bolt)

14

DW90

288

3/8" FNPT x 3/8" FNPT

135

160 (8 Bolt)

20

DF90 + bolted button

432

3/8" FNPT x 3/8" FNPT

135

160 (12 Bolt)

30

DF90 + bolted button

Flo-SS

0.11

104

1//2" FNPT x 1/2" FNPT

145

177 (4 Bolt)

15

DW114

207

1//2" FNPT x 1/2" FNPT

155

177 (8 bolt )

22

DF114 + bolted button

310

1//2" FNPT x 1/2" FNPT

175

177 (12 Bolt)

32

DF114 + bolted button

Flo-SS

0.16

100

3/4" FNPT x 3/4" FNPT

142

203 (4 Bolt)

16

DW127 + bolted button

200

3/4" FNPT x 3/4" FNPT

160

203 (8 Bolt)

27

DF127 + 0.25

300

3/4" FNPT x 3/4" FNPT

171

203 (12 Bolt)

36

DF127 + bolted button

MEDIUM volumes for high pressure, pulsation dampers with PTFE diaphragm membranes.
Damper
0.25 liter volume and above when designated "Z-Flo" have secondary
containment
sealing of an additional primary layer PTFE diaphragm,
with telltale hazard alert porting connection that sense any fluid
permeation of the diaphragm. This feature matches "sandwich" and multi
layer diaphragms of high pressure seales diaphragm head pumps.
This matching of damper features with pump feature is near mandatory for use with carcinogenic and pyroforic fluid systems.
"Z" class pulsation dampers are not inventory items.

LARGER volumes and pressures of high pressure pulsation dampers with PTFE diaphragms .
Larger
dampers with PTFE diaphragms provide in-place cleanibility pressure
pulsation interception and volumetric frow stabilization by the
use of in-line flow-through PIPING BASES.
This method enables
service of the pulsation damper that contains the diaphragm to be done
by simply releasing the damper fron its piping base, without breaking
the integrity of the piping system. The piping base is welded into the
piping and becomes a permanent part of the system.
Where the
benefits of pulsation dampng efficiency are not required, larger
dampers may be flange faced and bulted to a flanged "T" that has been
added to the system at extra cost.
WN = 37.5 Degree weld preparation Piping Base that stay part of piping GOTO PIPING BASE OPTIONS

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